Bolt and nut lock.



JOHN F. OCONNOE, OF CHICAGO, LLINOXS, ASSGNOR TO "Wliillv EL MIINER, @E

CHAZY, NEW YORK. i

BOLT AND NUT LOCK.

Specification of Letters Patent.

rateutea aan., is, taie.;

Application led July 26, 1916. Serial No. 111,363.

To all whom t may Concern:

Be it known that I, JOHN F. GConlvon, a citizen of the United States, residing at Chicago, in the county ot Cook and State ot' illinois, have invented a certain new and useful lmproveinent in Bolt and Nut Locks, of which the following is a full, clear, con-- cise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements upon bolt and nut locks.

The object ot my invention is to provide an eliicient means tor locking a nut upon a bolt.

ln the drawings forming a part ot this specification, `Figure 1 is a side elevation ot a bolt and a nut, together with the lock embodying my invention, the same being mounted in connection with a railroad rail and ish plates, the rail and tish plates be in@` shown in transverse section. Fig. Q is a perspective view ot the lock.

Referring to the drawings, the numeral 8 indicates a bolt having a head e at one end, and being threaded as at 5, at its other end, to receive a nut 6. The shank of the boltl 7 is provided with the nut lock 8, which con sists ot a plate ot metal 9, formed in a general cylindrical shape; more specifically, the same is formed into aheliX, the edges ot the plate preteinbl7 being slightly spaced apart, as indicated at l0 in Fig. 2 ot the drawings. On account of the helical formation, the greatest length of the lock is from the edge ot the plate on one side ot said groove, as at 1l, to the edge or the plate on the other side ot said groove 10 at the opposed ends of the lock, as at 12. The said lock is mounted upon the shank 7 oit the bolt, between the nut 6 and the head 4l. l have shown the same in Fig. 1 oit the drawings as applied to a railroad rail connection, the rail being indicated at le and being provided at. either side with the. iish plates l5-15, all perforated for the passage of a' bolt, adapted to hold the fish plates and rail together.

In the employment ot my improved lock, the saine is slipped upon the shank of the bolt and is entered through the pertorations provided therefor, the said lock being :formed of a suliicient length to extend somewhat from the openings in the members, to he held together, as tor instance, the .fish plates and rail. The nut is then threaded upon the bolt and upon being drawn home the point 12 ot the lock will be engaged against the nut, and the point 1l against the bolt head, the said lock pressing outwardlj,7 upon theV points 1l. and l2 against the bolt and nut, respectively, and thus locking the nut against turning upon the bolt.

lt will be understood that locks of this character, like the bolts upon which they are used, ina)r be made ot any suitable length and should be et such length that upon the drawing home ot a nut upon a bolt, the lock, which is preferably made of springlike material, will engage iirmly at its points against the inner tace ot the nut at its one end and the inner tace ot the head at its other end. The nut loclt will firmly hold a nut against rotation, whether said inner faces are smooth or corragated` or otherwise rou ghened.

l claim:

l, The combination with a holt, having a head and a screw nut, ot a nut lock, comprising a cylinder otmetal extending be tween the head and the nut, said c vlinder being arranged to torni a helix.

rhe combination with a bolt, having a head and a nut, comprising a plate ot' metal helieally conformed to the bolt and engaging the inner tace ot the nut at one end and the bolt head at the other end.

El. As an article ot' manufacture, a nur, lock for cooperation with bolts and nuts, said nut lock comprising a single coil termed troni a spring plate, the coil being bent in the torni oi a helix and adapted to extend through the recess provided 'tor the bolt, the ends of? the nut lock being adapted to engage the under side ot the bolt head and the under side of the cooperating nut.

'ln witness that l claim the foregoing l. have hereunto subscribed in'v name this 22nd day ot July, 1916,

,l HN F. UCONNOR.

Witnesses:

ELIZABETH M. Berrr, LUCILLE Hiccrns.

Genies of this patent may be obtained for ve cents each, by addressing; the Commissioner at leatenta,

a l v Washington, D. C, 

